clear wide characters if they get half-scrolled off the right

4 files changed, 14 insertions, 0 deletions

diff --git a/src/row.rs b/src/row.rs
index 090619d..76dd1d5 100644
--- a/src/row.rs
+++ b/src/row.rs
@@ -60,6 +60,10 @@ impl Row {
     pub fn truncate(&mut self, len: usize) {
         self.cells.truncate(len);
         self.wrapped = false;
+        let last_cell = self.cells.get_mut(len - 1).unwrap();
+        if last_cell.is_wide() {
+            last_cell.clear(*last_cell.attrs());
+        }
     }
 
     pub fn resize(&mut self, len: usize, cell: crate::cell::Cell) {
diff --git a/tests/data/fixtures/wide.in b/tests/data/fixtures/wide.in
index 23ebced..25e405f 100644
--- a/tests/data/fixtures/wide.in
+++ b/tests/data/fixtures/wide.in
@@ -22,3 +22,4 @@ aデbネ
 \x1bcデ\x08\x08\x1b[X
 \x1bcaデ\rb\u{301}
 \x1bc\x1b[1;79Hデ\x08ネ
+\x1bc\x1b[1;79Hデ\r\x1b[@
diff --git a/tests/data/fixtures/wide/25.json b/tests/data/fixtures/wide/25.json
new file mode 100644
index 0000000..bb83ae4
--- /dev/null
+++ b/tests/data/fixtures/wide/25.json
@@ -0,0 +1,8 @@
+{
+  "contents": "",
+  "cells": {},
+  "cursor_position": [
+    0,
+    0
+  ]
+}
\ No newline at end of file
diff --git a/tests/data/fixtures/wide/25.typescript b/tests/data/fixtures/wide/25.typescript
new file mode 100644
index 0000000..0dd7e04
--- /dev/null
+++ b/tests/data/fixtures/wide/25.typescript
@@ -0,0 +1 @@
+cデ
[@
\ No newline at end of file